Interannual variability in the Sulu Sea heat content and the deep-reaching warming trend
文献类型：期刊论文
| 作者 | Jin, Yuchun1,2,4; Li, Yuanlong1,2,3,4; Song, Yuanyuan5; Wang, Fan1,2,3,4 |
| 刊名 | DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
 |
| 出版日期 | 2026-06-01 |
| 卷号 | 227页码:15 |
| 关键词 | Sulu sea Ocean heat content Indo-Pacific Heat transport |
| ISSN号 | 0967-0645 |
| DOI | 10.1016/j.dsr2.2026.105641 |
| 通讯作者 | Li, Yuanlong(liyuanlong@qdio.ac.cn) |
| 英文摘要 | The Sulu Sea is a semi-enclosed marginal sea in the Maritime Continent with a maximum depth of -5000 m and communicates with adjacent seas through shallow straits. Recent studies have detected enhanced warming trends in its subsurface and deep layers since the 1990s. Based on observational datasets, we show that the 0-500 m ocean heat content (OHC) of the Sulu Sea exhibits prominent interannual variability superimposed upon a significant warming trend. Analysis of the 1/12 degrees GLORYS12V1 data (Global Ocean Reanalysis and Simulation version-12v1) reveals that these interannual variations are predominantly caused by the El Nino-Southern Oscillation (ENSO) through coastally trapped baroclinic oceanic waves. Specifically, during La Nina events, the clockwise propagation of downwelling waves around the Philippines causes a larger decline in the Sibutu Passage outflow than in the Mindoro Strait inflow, leading to a convergence of upper-layer warm waters in the Sulu Sea. The long-term warming trend is primarily attributable to warming of inflow waters, rather than local heating by surface fluxes. Further analysis reveals that compared to other regions of the Indo-Pacific warm pool, the heat accumulation in the Sulu Sea extends to larger depths and causes stronger warming rates in the deep Sulu Sea. The weak stratification in the Sulu Sea, regulated by its exceptionally warm deep-layer temperatures in climatology, facilitates the downward penetration of anomalous heat through diapycnal mixing. These findings provide a candidate explanation for the deep-layer heat storage "hotspot" in this unique marginal sea, with implications for regional biogeochemical cycles and marine ecosystems. |
| WOS关键词 | NORTH EQUATORIAL CURRENT ; TO-DECADAL VARIABILITY ; INDONESIAN THROUGHFLOW ; COMMUNITY STRUCTURE ; SOUTH CHINA ; INTERNAL WAVE ; SULAWESI SEA ; PHILIPPINE ; PACIFIC ; CHLOROPHYLL |
| 资助项目 | Natural Science Foundation of China[42090044] ; Natural Science Foundation of China[42476025] ; Natural Science Foundation of China[42406024] ; Ocean Science Data Center, IOCAS ; Laoshan Laboratory[LSKJ202202601] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001731163400001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/205054]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Li, Yuanlong |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Qingdao Marine Sci & Technol Ctr, Lab Ocean Dynam & Climate, Qingdao, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China 5.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA |
| 推荐引用方式 GB/T 7714 | Jin, Yuchun,Li, Yuanlong,Song, Yuanyuan,et al. Interannual variability in the Sulu Sea heat content and the deep-reaching warming trend[J]. DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,2026,227:15. |
| APA | Jin, Yuchun,Li, Yuanlong,Song, Yuanyuan,&Wang, Fan.(2026).Interannual variability in the Sulu Sea heat content and the deep-reaching warming trend.DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,227,15. |
| MLA | Jin, Yuchun,et al."Interannual variability in the Sulu Sea heat content and the deep-reaching warming trend".DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY 227(2026):15. |
入库方式： OAI收割
来源：海洋研究所
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